Description: Suitable for experiment, electronic design and DIY Double blue oil welding, not easy to oxidate or deform, high temperature resistant Great for building a prototype of an electronic circuit Each unit will accept transistors, diodes, LEDs, resistors, capacitors and virtually all types of components Fit for electronic engineers and students use Specification: Material: Glass Fiber Hole diameter: 1mm Hole pitch: 2.54mm Thickness: 1.6mm Size: 6 x 8 cm Package Includes: 5 x Double Sided Glass Fiber PCB Circuit Board